This simple rectangular structure, measuring 10.3 metres by 4.9 metres internally, was built using squared boulder rubble with carefully dressed corner stones. Though time has taken its toll, the walls still rise to impressive heights; the eastern gable reaches 2.4 metres whilst the north and south walls stand at approximately 3 metres. Two pointed doorways pierce the structure, one positioned midway along the south wall and another at the eastern end of the north wall, both featuring splayed openings with lintelled tops and evidence of wooden beam supports. Small sockets that once held latches and draw bars can still be spotted in the stonework.

The western gable remains the most intact feature, surviving to its full height with some original coping stones still clinging to the northern edge. A narrow rectangular window with a wide interior splay illuminates this end of the church, and five corresponding joist holes in the side walls reveal where a wooden gallery once stood, likely accessed from the northwestern corner. Fire damage has left its mark on the interior stonework, particularly affecting the western gable and sections of the adjoining walls, as well as the southeastern corner. At the foot of the eastern gable lies a collapsed altar, whilst the remnants of what may have been a priest’s residence, measuring roughly 8.8 by 5.9 metres internally, abut the church’s north wall, though these are now largely reduced to foundation lines obscured by vegetation.

The church sits within a disused graveyard that offers few visible features today, yet this unremarkable space is believed to mark the location of a much earlier ecclesiastical site. According to historical records, this could be one of the ancient church sites documented by Gwynn and Hadcock, suggesting that religious activity at Kilbarron extends far beyond the medieval structure that now dominates the site. The combination of architectural details, from the practical draw bar sockets to the elevated gallery space, paints a picture of a functioning parish church that served its community for centuries before falling into its current state of atmospheric ruin.